Campbell Brown

CNN news anchor Campbell Brown quit her low-rated news show on Tuesday night as ratings keep sliding at CNN.

In a statement, Brown said the ratings were just too bad to keep going.

“The ratings for my program are not where I would like them to be. It is largely for this reason that I am stepping down as anchor of CNN’s Campbell Brown,” she said.

Ratings for Brown, Larry King and Anderson Cooper, especially among younger viewers, have fallen dramatically since the 2008 presidential election.

Bill O’Reilly rules the 8 p.m hour on cable, with competition like Nancy Grace and Keith Olbermann also getting good audiences.

Brown had an average of 591,000 viewers in 2010, compared with Olbermann 1.03 million and O’Reilly with 3.34 million.

Nancy Grace on CNN's sister HLN network averages 745,000 viewers.

The next person who could face extinction on CNN is Anderson Cooper, the 10 p.m. host who is also the son of Gloria Vanderbilt.

Cooper has seen a 45 percent rating slide among younger viewers in the past year and he’s started using a live audience to bring in new viewers.